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Preparation method of modified bentonite sewage treatment material

A technology of bentonite sewage and bentonite, applied in water/sewage treatment, adsorption water/sewage treatment, light water/sewage treatment, etc., can solve the problem of increasing the distance between montmorillonite layers, increasing the absorption and utilization of visible light, and increasing the adsorption ratio Surface area and other issues, to achieve the effect of improving exchange adsorption capacity, improving photocatalytic activity, and strong adsorption and degradation ability

Inactive Publication Date: 2016-10-05
青岛润国生态科技研究院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is aimed at current bentonite and TiO 2 In order to solve the problem of sewage treatment of materials, a preparation method of modified bentonite sewage treatment material is proposed. This modified bentonite sewage treatment material adds organic cationic surfactants to bentonite, which increases the interlayer distance of montmorillonite and increases The specific surface area of ​​adsorption is increased, and at the same time, the metal-doped TiO 2 Loaded on bentonite, it improves the photocatalytic activity and increases the absorption and utilization of visible light

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) According to the volume ratio of tetrabutyl titanate, absolute ethanol, and glacial acetic acid of 10: 30: 2, add tetrabutyl titanate to the absolute ethanol, then add glacial acetic acid, and stir to obtain a uniform and transparent The light yellow solution A;

[0023] (2) According to the volume ratio of deionized water, absolute ethanol and nitric acid of 10: 80: 5, add a certain amount of lanthanum nitrate to the deionized water, and then add absolute ethanol and nitric acid to obtain solution B;

[0024] (3) According to the volume ratio of deionized water and glacial acetic acid of 35:10, add a certain amount of sodium modified bentonite to the deionized water and stir, then add glacial acetic acid and continue stirring to obtain suspension C;

[0025] (4) According to the volume ratio of solution A, solution B and suspension C of 65:45:92, slowly add solution B obtained in step (2) to solution A obtained in step (1) to form solution D, and then D was slowly added ...

Embodiment 2

[0030] (1) According to the volume ratio of tetrabutyl titanate, absolute ethanol, and glacial acetic acid of 12:35:3, add tetrabutyl titanate to the absolute ethanol, then add glacial acetic acid and stir to obtain a uniform and transparent The light yellow solution A;

[0031] (2) According to the volume ratio of deionized water, absolute ethanol and nitric acid of 8:60:4, add a certain amount of ferric nitrate to the deionized water, and then add absolute ethanol and nitric acid to prepare solution B;

[0032] (3) According to the volume ratio of deionized water and glacial acetic acid of 30:8, add a certain amount of sodium modified bentonite to the deionized water and stir, then add glacial acetic acid and continue stirring to prepare suspension C;

[0033] (4) According to the volume ratio of solution A, solution B and suspension C of 70:50:95, slowly add solution B obtained in step (2) to solution A obtained in step (1) to form solution D, and then D was slowly added to suspe...

Embodiment 3

[0038] (1) According to the volume ratio of tetrabutyl titanate, absolute ethanol, and glacial acetic acid of 10:40:1, add tetrabutyl titanate to the absolute ethanol, then add glacial acetic acid and stir to obtain a uniform and transparent The light yellow solution A;

[0039] (2) According to the volume ratio of deionized water, absolute ethanol and nitric acid of 12:75:5, add a certain amount of yttrium nitrate to the deionized water, and then add absolute ethanol and nitric acid to obtain solution B;

[0040] (3) According to the volume ratio of deionized water and glacial acetic acid of 25:9, add a certain amount of acid modified bentonite to the deionized water and stir, then add glacial acetic acid and continue stirring to obtain suspension C;

[0041] (4) According to the volume ratio of solution A, solution B and suspension C of 75:50:100, slowly add solution B obtained in step (2) to solution A obtained in step (1) to form solution D, and then D was slowly added to suspen...

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Abstract

The invention provides a preparation method of a modified bentonite sewage treatment material. The method includes the steps of: 1) adding tetrabutyl titanate to anhydrous ethanol, and adding glacial acetic acid to prepare a solution A; 2) adding a metal nitrate to deionized water and adding anhydrous ethanol and nitric acid to prepare a solution B; 3) adding bentonite to deionized water, and adding glacial acetic acid to prepare a suspension C; 4) slowly adding the solution B to the solution A to form a solution D, and slowly adding the solution D to the suspension C to form gel; 5) drying, grinding, washing, drying and thermal-treating the gel to obtain bentonite modified by TiO2; and 6) adding the bentonite modified by TiO2 to an organic cationic surfactant solution, filtering the mixture, and washing and drying the product to prepare the modified bentonite sewage treatment material. The modified bentonite sewage treatment material has strong adsorption and degradation capability on organic substances, heavy metal ions, nitrogen, phosphorus and the like.

Description

Technical field [0001] The invention relates to a preparation method of sewage treatment materials, in particular to a preparation method of modified bentonite sewage treatment materials. Background technique [0002] With the rapid development of industry and agriculture, the problem of water pollution has become increasingly serious, which directly threatens human health and the sustainable development of social economy. Sewage contains a lot of organic pollutants, phosphates, nitrates, nitrites, and heavy metal ions. Especially in recent years, the N and P content in oceans and lakes is too high, causing serious eutrophication. Therefore, sewage treatment has increasingly become a hot and difficult problem in society. [0003] Bentonite is a natural nano-adsorbent material with montmorillonite as the main component. It has a large cation exchange capacity and a strong adsorption capacity for pollutants. The montmorillonite layer can also absorb hydrated cations, which can expan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/22B01J23/10B01J23/745C02F1/28C02F1/30C02F1/62C02F1/72
CPCY02W10/37
Inventor 仝利赵红邱德亮李红莲
Owner 青岛润国生态科技研究院
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